I'm on shared hosting and I'm trying to set up the memcached.so module to be used for php. Obviously I'm not able to put the .so file in /usr/lib64/php/modules so for my extension_dir value in my version of the php.ini (/home2/my_site/public_html/php.ini)I have:

extension_dir = "/usr/lib64/php/modules:/home2/my_site/apps/lib/php"

and at the bottom of the php.ini file I have

extension=memcache.so

However, the memcache module still isn't showing up in php_info(). Any suggestions on getting this working? Thanks.